Self-propelling traveling crane



G. BRUN- SELF PROPELLING TRAVELING CRANE.

APPLICATION FILED SEPT- 30,1919.

Patented Feb. 28, 1 922.

3 SHEETS-SHEET I.

llYVE/YTOE ava w ATTO E/YfIYi G. BRUN.

SELF PROPELLING TRAVELING CRANE.

APPLICATlON FILED SEPT.30, 1919.

1,408,263. Patentefi Feb. '28, 1922.

3 SHEETS-SHEET 2- G. BRUN.

SELF PROPELLING TRAVELING CRANE.

APPLICATION FILED SEPT.30, I919.

Patented Feb. 28, 1922.,

3 SHEETS-SHEET 3.

vaaaaaaa GAETAN BRUN, OF PARIS, FRANCE.

SELF-PROPELLING TRAVELING CRANE.

Specification of Letters Patent.

Patented Feb. 28, 1922.

Application filed September 30, 1919. Serial No. 327,591.

T all whom it may concern:

Be it known that I, GAiiTAN BRUN, a citizen of the Republic of France,and residing fication.

This invention has for its object to providean improved self-propellingcrane forv traveling on a road, capable of assuming all the positionsthat are required for the handling of loads.

With this object, the motor ,mounted on v the platform of the crane andserving for lifting the load, is adapted also to drive the wheels of theplatform and to turn the crane 1 around its vertical axis, and thearrangement of the mechanism is such that the crane is capable ofsimultaneously lifting, swinging or slewing, and transporting the load.

A constructional form of this invention is illustrated in theaccompanying drawings in which:

-Fig. 1 is a side elevation partly in section of the improved crane.

Fig. 2 is a plan thereof.

gig. 3 is a partial plan on a larger scale, an

Fig. 4 is an axial section of a portion of the slewing mechanism.

The crane proper comprises a frame supporting a cabin Amid a pivoted jibB mounted on slewing'rollers E running on a circular track F. The cabinA contains a winch C whose rope passes over guide pulleys and carries ahook L. In front of this cabin is a seat N, a hand steering wheel M anda series of levers P for controlling the various devices. The wholeofthis arrangement is mounted on a fixed turn-post D of a carriage Gresting on two wheeled axles K H; the rear wheels K being drivingwheels, and the front wheels H serving as steering wheels.

A petrol engine 1 provided with a radiator with fan, carries at the endof its crank shaft a pinion 2 loose on said shaft but capable of beingconnected thereto by means of aclutch 2 (Fig.

This pinion 2 meshes with a pinion 3 fixed on a shaft 4 that drives alifting drum, a.

mechanism for-slewing the crane, a mecha-' nism for raising the jib, andthe driving wheels of the carriage.

The lifting mechanism is as follows: A

pinion 5 fixed on the shaft 4 drives a pinion 6 that is loose on anintermediate shaft 7 but capable of being connected thereto by means ofa clutch 1i). This intermediate shaft carries a pinion 9 driving throughthe medium of a toothed wheel 11 a lifting drum 12. The shaft 7 carriesalso a pulley 13 for braking the lifting motion.

The mechanism for slewing the crane is such that it allows the crane torotate indefinitely around the post D in either direction. It comprises:a double sleeve 16 slidable along feather-keys on the shaft 4, andcapable of connecting to said shaft alternatively one or the other oftwo bevel wheels 14 or 15. The result is that a pinion 17 can be drivenin one or the other direction. This pinion is fixed on a shaft 18 anddrives through a worm 19 a pinion 20 which can roll over a ring of teeth21 fixed on the easing of the track F. A brake 22 allows of regulatingthis motion.

For the purpose of raising the jib, a double clutch 25 is provided whichallows of connecting to the shaft 4 alternatively one or the other oftwo pinions 23 or 24 meshing with a pinion 26 which, through the medium'of a shaft 27 and a worm 28, actuates a winch 29 that acts through arope uponthe tie-rod B -of the jib. The actuation of the driving wheelsof the carriage is effected as follows:

A first speed is. given by means of a toothed wheel 30 fixed on theshaft 4 driving a toothed wheel 3l.that is loose on an intermedite shaft32 but is capable of being connected thereto by means of a clutch 33. Asecond speed is given by the pinions 34 and 35 and the clutch 36 in asimilar way. The two cluthes 33 and 36 are preferably controlled bymeansof one lever, (not shown).

For reversing the direction of travel, the shaft 32 is provided with adouble clutch similar to the clutches employed for slewing and raisingthe jib, comprising a sleeve 39 sliding along feather-keys on the shaft'32,

and capable of being moved into engage-.

ment with one of the two toothed wheels 37 or 38. A toothed wheel 40driven either by the toothed wheel 37 or by the toothed wheel 38 servesto drive a shaft 41 and a toothed wheel 42 fixed on the said shaft. Thistoothed wheel drives a socket or sleeve 43 mounted on balls on theslewing post D and provided with a bevel pinion by which the motion istransmitted to a pinion 44, a. shaft steering wheel M with its spindleL9 is mounted by means of brackets and 53 on the revolving frame. Abevel pinion 51 fixed on the spindle 4:9 actuates a pinion 52 that isfixed on a shaft 54 carrying a pinion 55. This pinion drives a two-partsleeve 56 mounted on balls on the socket 43. This sleeve drives in itsturn a pinion 57 fixed on a shaft 58 driving a speed-reducing de-.

vice 59 of the worm type fixed on the traveling carriage G. The interiorof the worm wheel constitutes a nut 60 having multiple square threadsactuating a screw-threaded rod 61 guided in a bracket 63. This rodcarries a connecting rod 62 attached to the steering arm 64, and throughthe medium of the bar 65, to the steering arm 64*, (Figs. 2 and 4). u

In order to facilitate the turning of the crane and to prevent thedriving of the crane from influencing the direction of travel, adisengaging device may be'provided to enable the pinion to bedisengaged. On the other hand it may be preferred to arrange a brake onthe socket 43;

In cases where it is only required to effect the slewing of the craneover a'restricted angular area, the construction may be simplified bymounting the steering gear upon the traveling carrlage.

Instead of a hook L, the crane may car a, grab or bucket, and beprovided with all suitable accessories.

A self-propelling crane constructed according to the present inventionis capable of performing all the operations of handling loads in publicworks, ports, and for the most varied industrial purposes. It is capableof traveling at a fast rate and is vehicle and an engine mounted on thesaid crane, of a stationary centering pivot hav'- ing the cranerevoluble thereupon, a movable sleeve disposed upon the said centeringpivot, the upper end of the said sleeve being connected with the engineby suitable power transmission means, and means connecting the lower endof the said sleeve with the driving wheels of the vehicle.

2. The combination with a motor vehicle, a revoluble crane disposed uponthe'said vehicle and an engine mounted on the said crane, of'astationary centering pivot having the crane revoluble thereupon, amovable sleeve disposed upon the said pivot, a steering hand wheelmounted at the front of the vehicle upon the revoluble crane, a movablesleeve revoluble upon the said first-named sleeve, means connecting thesaid movable sleeve on the one hand with the steering hand wheel and onthe other hand with the steering wheels of the vehicle.

3. The combination with a motor vehicle,

a revoluble crane disposed upon the said vehicle and an engine mountedon the said crane,'of a stationary centering pivot having the cranerevoluble thereupon, a sleeve movable upon the said pivot and serving totransmit the movement of the engine to the driving wheels, and powertransmission means comprising a change-speed device disposed between theengine and the said sleeve.

In testimony, that I claim the foregoing as my invention I have signedmy name in presence of subscribing witnesses.

GAETAN BRUN.

Witnesses:

CHAS. P. PREssLi', EUGENE WA'ITIER.

